cannot get gallery button working with my own images

Problem with Mypuzzle-jigsaw or mypuzzle-sliding. My Link above is a temp site so please go to the puzzles page. I deleted jigsaw now and only show mypuzzle-sliding.

I have cleared the cache every 30 minutes now, deleted both the jigsaw and slider at least 3 times, and after restarting, it is not pointing to a gallery at all. I am not even specifically pointing to an image at this time and going with a random image now. Still no gallery. Originally, I pointed to my own file path but since you were directing us to wp-content folder I have now changed to that and it is still not showing a gallery. Gallery button does not do anything.
Strangely, after deleting all paths from settings and just back to simple [sliding-mp] on the module it points to your sample images but still no gallery button working.

This is where I am pointing the slider to now; wp-content/plugins/mypuzzle-sliding/gallery. The setting on the module that contains the code is just stating a simple [sliding-mp]. I tried both adding the gallery on the module and without but it did nothing so back to simple.
Your sample pictures were put in a separate folder called ‘Sample’ but again, strangely, the puzzle is pulling up your images instead of what is in the folder! And I did clear the cache!

I suspect that it might be something aggravatingly simple, but I have been redoing this so many times now, I am at a loss as to what to try.

I hope it is still an open forum and that you still check it. I noticed that last entry was 3-5 years ago. Please help!

The page I need help with: [log in to see the link]